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Filament winding consists of winding resin impregnated fibers or rovings of glass on a rotating mandrel in predetermined patterns.  After the shell laminate layers are wound-on, the tank shell  is allowed to finish curing and removed from the mandrel. . Typical thermoset resins used in filament wound fabrication include polyesters, vinyl esters, and isophthalics. A room temperature  MEKP cure system is usually utilized to cure the FRP laminate.

Spray-up is an open molding fabrication method used to fabricate tank bottoms and dished tops and other large surface area component parts. Chopped fiberglass reinforcements and catalyzed resin are deposited onto a mold surface using a chopper/spray-up gun. Rollers or squeegees are used to manually remove entrapped air and work the resin into the reinforcements. Woven fabric or woven roving is added  to the laminate for greater strength.    Typical thermoset resins used in spray-up fabrication include polyesters, vinylesters, and isophthalics. A room temperature MEKP cure system is usually utilized to cure the FRP laminate..

Secondary bonding operations such as joints and fitting installation use the hand lay-up method.  Hand lay-up is the simplest, oldest most basic fiberglass fabrication method and is utilized by every fiberglass fabricator.

 

 

  • Shop fabricated tanks ranging in size from 1'6" to 14’0" in diameter
  • Contact molded per ASTM D-4097
  • Filament wound per ASTM D-3299
  • ASTM Types I & II
  • ASTM Grades 1 & 2
  • Quality Standards per ASTM D-2563
  • Temperatures up to 250 F
  • Shop fabricated up to 14'0” dia
  • Dished & conical bottoms
  • Field inspections
  • Field relining
  • Field modifications

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